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Old 05-29-2008, 01:23 PM   #1
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I just installed a 5th air pin box on my 34 Cedar Creek. The hitch surface is tilted down in front about 4 degrees when not hooked to my truck and much more when the full pin weight is on the truck. Is this ok? It doesn,t seem right. Before the air pin the hitch was level. Thanks for the help!
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Old 05-29-2008, 01:23 PM   #2
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I just installed a 5th air pin box on my 34 Cedar Creek. The hitch surface is tilted down in front about 4 degrees when not hooked to my truck and much more when the full pin weight is on the truck. Is this ok? It doesn,t seem right. Before the air pin the hitch was level. Thanks for the help!
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Old 05-29-2008, 05:47 PM   #3
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Hello skipjack! Welcome to irv2.com and our extended family.
How much air pressure is in your 5th airborne pin box? Is it sitting the same horizontally as your trailer or is it tilted down at front edge?
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Old 05-29-2008, 05:50 PM   #4
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by skipjack:
The hitch surface is tilted down in front about 4 degrees when not hooked to my truck and much more when the full pin weight is on the truck. </div></BLOCKQUOTE>

I don't understand what you mean by angled more when the weight is on the truck. I have an Trail-Air air pinbox and when not hitched, the hitch is somewhat angled down. But when hitched to the truck and all the weight is off the landing jacks, it all levels out.

Maybe I just don't understand the entire question.
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Old 05-30-2008, 06:49 AM   #5
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Thanks for responding. When everything is hitched up and the air pressure in the air bag is pressurized to bring the line on the shock to the correct fill point per the instruction, the surface of the fifth wheel hitch is tilted down in front.
(The 5th Airborne pin box hinges at the front and I think the Trailair hinges at the rear.) When the truck is unhitched the pressure in the air bag causes the clam shell of the hitch to open up. If you were to place a straight edge on the mating surface of the pin box it would be 4 degrees lower in front. When hitched up the clam shell closes somewhat (to he indicator line on the shock) and the mating surface on the pin box is even lower in the front. I haven't measured that angle but it's maybe 8 degrees down.
Is this right?
Skipjack
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Old 05-30-2008, 08:21 AM   #6
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Sounds to me like you might have the pin box bolted into misaligned holed in the head. Should be parallel to the ground JMHO. For a definitive answer, contact the manufacturer and ask them.
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Old 05-30-2008, 10:09 AM   #7
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skipjack

that is how my Trail-Air sits when unhooked. I never looked that close when hitched up. I appeared to be level enough so as not to catch my attention. I think it is OK. But like Don said, contact the manufacturer to be sure.

The only thing I had the dealer do is move the hitch down one bolt hole to give me more bed rail Clarence.
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Old 05-31-2008, 06:43 AM   #8
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Thanks for the replies! I contacted the manufacturer and they are sending me something to fix the problem!? In any case it looks like the whole assembly needs to be rotated to raise the nose of the pin box but I don't think I can find four bolt holes that will line up. Right now the flange on the trailer side of the hitch mount and the flange on the air box are parallel but they won't be if I can rotate the pin box. Is that important?
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